fixed bug with recursive mutex

Author: sberkun

core/platform/lf_rp2040_support.c

@@ -310,9 +310,9 @@ int lf_cond_signal(lf_cond_t* cond) {
 }
 
 int lf_cond_wait(lf_cond_t* cond) {
-    mutex_exit(cond->mutex);
+    lf_mutex_unlock(cond->mutex);
     sem_acquire_blocking(&(cond->sema));
-    mutex_enter_blocking(cond->mutex);
+    lf_mutex_lock(cond->mutex);
     return 0;
 }
 

include/core/platform/lf_rp2040_support.h

@@ -23,10 +23,10 @@
 #ifndef LF_SINGLE_THREADED
 #warning "Threaded support on rp2040 is still experimental"
 
-typedef mutex_t lf_mutex_t;
+typedef recursive_mutex_t lf_mutex_t;
 typedef struct {
     semaphore_t sema;
-    mutex_t* mutex;
+    lf_mutex_t* mutex;
 } lf_cond_t;
 typedef int lf_thread_t;